i can't believe apple calls this a pro app and does not support ANY mf back...i mean i am used to it with phase, but leaf? lightroom is looking pretty good..and free for now....but if that is how they get people to adopt their workflow....actualy called apple about mf back support...the 3rd level tech suport for aperture even knew what a digital back was! the 2 before had no idea what i was talking about! tech support for a pro application....